Add pressed ginger, lemon, and orange to your carrot juice for a dynamic flavor.Syda Productions/ShutterstockSir John, a celebrity makeup artist who appears on "American Beauty Star" with Lima, also thinks that carrot juice is key for radiant skin. "Every person should [drink] carrot juice because it increases cell turnover and it makes your skin really healthy," he told INSIDER. "I like to say even green juices, like kale juice, speed up circulation."

The fact that Sir John's high-profile clients like Beyoncé, Kim Kardashian, and Chrissy Teigen have glowing skin might seem like proof enough, but there is a scientific connection between drinking carrot juice and healthy skin. Livestrong reports that carrots are good for the skin because they contain high concentrations of vitamin A and beta-carotene, which act like a natural sunscreen.

According to WebMD, having poor blood circulation can negatively impact a person's complexion. This could mean anything from persistently dry skin to the formation of dark under eye circles. "All dark circles are are sluggish circulation. So if you increase your blood flow you'll have less dark circles and less puffiness," Sir John explained.

Since improved circulation often leads to healthier skin, Sir John says that you won't need to wear as many bulky makeup products if you pick up a juicing habit. "You use less foundation if you have great skin," he said. This is probably a good thing, as wearing less makeup could help your skin in the long run.

However, both WebMD and Livestrong noted that establishing a regular exercise routine might help to boost blood circulation, which will, in turn, rejuvenate skin. And since Lima regularly drinks juices and adheres to a strict exercise plan, it's no wonder her skin looks so flawless.